code: def test_fuzzy_search_key_error():
      fd = FuzzyDict()
      fd.cutoff = 0.9
      _ = fd["我是北京"]
  
file_path: pyecharts/test/test_datasets.py
imports: import os
  import urllib.error
  from unittest.mock import patch
  from nose.tools import assert_equal, assert_in, raises
  from pyecharts.datasets import EXTRA, FuzzyDict, register_url, register_files, register_coords
label_desc: Use image node_id 3 for calling a global function with example usage: test_fuzzy_search_key_error() without return types